- added numer_denom() to get numerator and denominator in one pass

[ginac.git] / ginac / indexed.cpp

diff --git a/ginac/indexed.cpp b/ginac/indexed.cpp
index f0726915674bf13ce8df0383013ba0bb4ed7fe24..a2eda2c482b1621e7a94798a5db3ebece9ffbff4 100644 (file)
--- a/ginac/indexed.cpp
+++ b/ginac/indexed.cpp
@@ -30,7 +30,7 @@
 #include "ncmul.h"
 #include "power.h"
 #include "lst.h"
-#include "inifcns.h"
+#include "inifcns.h" // for symmetrize()
 #include "print.h"
 #include "archive.h"
 #include "utils.h"
@@ -815,27 +815,41 @@ ex simplify_indexed(const ex & e, exvector & free_indices, exvector & dummy_indi
        return e_expanded;
 }
 
-ex simplify_indexed(const ex & e)
+/** Simplify/canonicalize expression containing indexed objects. This
+ *  performs contraction of dummy indices where possible and checks whether
+ *  the free indices in sums are consistent.
+ *
+ *  @return simplified expression */
+ex ex::simplify_indexed(void) const
 {
        exvector free_indices, dummy_indices;
        scalar_products sp;
-       return simplify_indexed(e, free_indices, dummy_indices, sp);
+       return GiNaC::simplify_indexed(*this, free_indices, dummy_indices, sp);
 }
 
-ex simplify_indexed(const ex & e, const scalar_products & sp)
+/** Simplify/canonicalize expression containing indexed objects. This
+ *  performs contraction of dummy indices where possible, checks whether
+ *  the free indices in sums are consistent, and automatically replaces
+ *  scalar products by known values if desired.
+ *
+ *  @param sp Scalar products to be replaced automatically
+ *  @return simplified expression */
+ex ex::simplify_indexed(const scalar_products & sp) const
 {
        exvector free_indices, dummy_indices;
-       return simplify_indexed(e, free_indices, dummy_indices, sp);
+       return GiNaC::simplify_indexed(*this, free_indices, dummy_indices, sp);
 }
 
-ex symmetrize(const ex & e)
+/** Symmetrize expression over its free indices. */
+ex ex::symmetrize(void) const
 {
-       return symmetrize(e, e.get_free_indices());
+       return GiNaC::symmetrize(*this, get_free_indices());
 }
 
-ex antisymmetrize(const ex & e)
+/** Antisymmetrize expression over its free indices. */
+ex ex::antisymmetrize(void) const
 {
-       return antisymmetrize(e, e.get_free_indices());
+       return GiNaC::antisymmetrize(*this, get_free_indices());
 }
 
 //////////